I have tried both versions of the blackwidow. I dont currently own a mechanical, but have tried filco brown and blues.
1) both versions feel the same.
2) They are tactile AND clicky
3) I am not sure what switches they actually use (did not have anything suitable to pry it out)
edit: ok i see that they are actually using the blue switches according to an earlier post. That comes as abit of a shock
4) The weight on the switches are FEELS higher than the filco brown and blue switches.
5) They FEEL more tactile than both filco brown and blue switches.
6) I am not sure how the clickyness compares to the blue, it was rather noisy when i tested it out.
I actually think I would prefer the razer mechanical over the blue/brown switches, as I find the blue/brown too light and not clicky enough, which is why I did not buy them.
I think the piano finish is awful. It is a fingerprint and dust magnet.
I also dislike how the face of the keyboard "falls off". Carrying it around would be a pain. See first pic in the middle row
http://store.razerzone.com/store/razerusa/en_US/pd/productID.211324200/parentCategoryID.35156900/categoryId.49136200/I heard the SC2 keyboard will use mechanical switches too, according to the razer reps anyway. These guys are clueless part-timers though so this may not be a false rumor.